FET 5.30.2 released

I didn't post the changelog from the last versions, so i add them with this post:

Version 5.28.1
- Crash bug fix when the input file contained activities with duplicate students sets / teachers and the user renamed these students sets / teachers (reported by Volker Dirr).
- When renaming a students year, the user can choose to rename also automatically the groups and subgroups contained in this year (suggested and implemented by Volker Dirr).
- Added colors when viewing the timetable from the interface, if the option to use colors in the interface is selected (suggested and implemented by Marco Vassura).

Version 5.28.2
- Updated to Qt 5.5.1.
- Source cleanup.

Version 5.28.3
- After a successful single generation (or after an impossible one), an attention sound will be emitted. Also, after all the timetables finished (successfully, impossibly, or with time limit exceeded) in a multiple generation, the same attention sound will be emitted (suggested by Maouhoub and uni_instructor).
- Updated the Vietnamese translation, by Nguyễn Hữu Duyệt.
- Updated the Arabic translation, by Silver.
- Added a new Vietnamese example file, by Nguyễn Hữu Duyệt.
- Added a new Namibian example file, by Bobby.

Version 5.28.4
- Bug fix: not allowing the file name to start with white space(s), as the HTML results do not work (reported by Volker Dirr).
- Updated the Arabic translation, by Silver.

Version 5.28.5
- Bug fix: not allowing the file name to end with white space(s), as this may lead to errors (reported by Volker Dirr).

Version 5.28.6
- The user can now change the order of the teachers, students, subjects, activity tags, buildings, rooms, time constraints, and space constraints from the interface (suggested by Volker Dirr).
- Added a new Indian example file, by Sudharshan K M and Nataraj Urs H D.

Version 5.29.0
- Updated to Qt 5.6.0.
- Added the possibility of automatic coloring of the HTML timetables, using the HTML level 7 in the "Settings/Timetables" menu.
Also, the user can color the timetables in a similar way from the "Timetable print" dialog.
(Suggested by Handaya, hudrea and Udo Schütz, implemented by Volker Dirr and Liviu Lalescu, using also code by Marco Vassura.)
- Code cleanup.
- Brazilian Portuguese translation update, by Alexandre R. Soares.
- Added a new Indian example file, by Jijo Jose.
- Added two new Namibian example files, by Bobby.

Version 5.29.1
- The method of selection of the categories of timetables to be written on disk after generation is now improved (suggested by Alexandre R. Soares).
- Brazilian Portuguese translation update, by Alexandre R. Soares.

Version 5.29.2
- Crash bugs fixed - the program crashed when renaming teachers/students and removing their attached constraints not available times (reported by Wizard).
- Brazilian Portuguese translation update, by Alexandre R. Soares. It is now complete.
- Code cleanup (improvements found by Volker Dirr using Cppcheck 1.73).

Version 5.29.3
- Code cleanup.
- Corrected two minor typos in the source code (reported by Alexandre R. Soares).

Version 5.29.4
- Updated the sources to gcc-6.1.1 (but the Windows version still uses MinGW 4.9.2).
- The code in the HTML timetables tries to avoid page breaks in the tables (suggested by Benahmed Abdelkrim, implemented by Volker Dirr).

Version 5.29.5
- Updated to Qt 5.6.1.
- Rare crash bug fix in the activity planning form (reported by Benahmed Abdelkrim).

Version 5.29.6
- Updated to Qt 5.7.0 (thus, the Windows version now uses MinGW 5.3.0).

• Version 5.30.0
• Bug fix: the 'Activities rooms statistics' did not work correctly: it considered even inactive constraints (reported by math user).
• Added the possibility of selecting whether to print the detailed or the less detailed HTML timetables for the groups and years (suggested by math user, implemented by Volker Dirr and Liviu Lalescu).
• Added the possibility of selecting whether to print the detailed or the less detailed HTML timetables for the free periods of the teachers (suggested by Volker Dirr and implemented by Volker Dirr and Liviu Lalescu).
• Added the target number of hours for teachers (suggested by Volker Dirr and implemented by Volker Dirr and Liviu Lalescu).
• Added the teachers' qualification to teach certain subjects, and the statistics to show where the qualification of a teacher for a subject is not respected (suggested by Volker Dirr and implemented by Liviu Lalescu).
• Added 12 new example files from Namibia, by Bobby Wise.

Version 5.30.1
- Interface improvement: the shortcut buttons on the main form are better arranged (suggested by math user).

Version 5.30.2
- Added more checks before the generation start (suggested by Léo-Paul Roch and Volker Dirr).
- Very rare bug fixed (probably never met in practice).